ckane



R.- T. CRANE.

Steam Heater.

No. 67,503. Patented Aug. 6, 1867.

glatten tates latent @frn RICHARD T. CRANE, OF CHICAGO, ILLINOlS.

Letters Patent No. 67,503, dated August 61867..

STEAM-HEATER.

Elige tlntnl referat tu it tlgcse tettcrs jatent mit mating mit nf tige sume.

TO ALL 'WHOM IT MAY CONCERN:

Be it known that I, RICHARD T. CRANE, of Chicago, in the county of Cook, and State of,Illiuois, have invented a new and useful Improvement in Steam-Heaters; and I do hereby declare and make known that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, and tho letters and igures marked thereon, which form part of this specification.

My invention relates to that class of steam-heaters in which a coil' or pile, or a series of coils or piles, of steam pipe is used to contain the steam and radiate the heat; and its object is to insure a uniform and equal temperature in the coil from top to bottom.

It is well known that, in ordinary steam coil-heaters, where the steam is admitted into the same at the top, the condensed steam runs down into the lower part of the coil, and tends to cool the same, thus, in extremely cold weather, rendering that part of the pipe or coil very liable tofrceze up, or at least to become so cold as to subsorve no purpose so far as heating purposes are concerned, and finally to fill the coil with water, unless some provisions for drawing off the same be provided. v

My invention consists in admitting the steam into the header at the bottom of the series of coils' which form the radiator, so that the condensed steam may flow back against the steam passing into the coil from the boiler, and thus the upper part of the coil is always lled with steam, whilev the lower part, in which the condensed steam runs, is llcd with the hot steam directly from the boiler, thus counteracting the tendency of the condensed steam to cool the coil, and keeping the entire apparatus at an equal and uniform temperature, as desired.

To enable those skilled in the art to understand how to construct and ilse my invention, I will proceed to describe the same with particularity, making reference in so doing to the aforesaid drawings, iu which- Figure 1 represents an end View of my invention.

Figure 2, a side elevation ofthe same; and

Figure 3 is a plan or top view thereof.

Similar letters of reference in the different figures denote the same parts of my invention.

A represents the .pipe through which the steam is admitted into the radiator,` which is composed of the headers B C, and a series ot' steam pipes or coils, marked P in the drawings. The upper header C is provided with a valve or stop-cock, D, for the purpose of allowing the air to escape from the coil as the steam is admitted. The headers B C unite the ends of the entire series of coils, so thatV the steam entering the lower` header B is uniformly distributed through the entire apparatus, the air in all the coils being forced into the upper header, whence it escapes at D, as before mentioned. Thus it is readily seen that any water which may condense in any part of the coil will llow down and iiow into the boiler, as desired, through the steam inlet-pipe A.

Having described the construction and operation of my invention, I will specify what I claim, and desire to secure by Letters Patent.

I claim `the combination and arrangement of the headers B C and pipes P with a steam-inlet, A, at the bottom, as and for the purposes described.

R. T. CRANE.

Witnesses:

W. E. Manns, L. L. COBURN. 

